Pile-heading machine



Sept. 1, 1925.

M. M. UPSON PILE HEAD'ING momma:

Filed July 19, 1923 Patented Sept. 1, 1925.

UNITED stares MAXWELL MI. UPSON, 014 EN GLEWOOD, NEW JERSEY.

PILE-I-IEADING MACHINE.

Application filed July 19, 1923. Serial No. 652,488.

To all whom it may concern:

Be it known that I, MAXWELL M. UrsoN, a. citizen of the United States of America, residing at Englewood, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Filed-leading Machines, of which the following is a full, clear, and exact description.

This invention relates. to machines for heading piles, more particularly the wooden portion of so-called composite piles, the lower portion or section of which is of wood and the upper of concrete. In a type of composite pile now in extensive use the wood section is provided at its upper end with a tenon, whichfits into a mortise in the lower end of the concrete section, and the two are anchored together by means which requires a socket or recess extending axially into the tenon. My present invention has for its chief object to provide a machineby which the tenon and socket can be formed on the wood pile rapidly and accurately in one op-' eration. To this and other ends the invention consists in the novel features hereinafter described.

In its preferred form the machine in which the invention is embodied comprises a turning and boring head, by which the end of the pile is turned down to form the tenon and boredout to form the socket; a work-holder in which the pile is supported in axial alignment with the head; and mechanism for producing a relative movement of rotation, and relative movement of approach and recession, between the head and the work-holder.

One form of the invention is illustrated in the accompanying drawings, in which- Fig. 1 is a side view of the machine.

Fig. 2 is a cross section about on line 2-2 of Fig. 1.

Fig. 3 is an end view from the right of Fig. 1, showing the clamp and carriage by which the pile is held against rotation and is carried into operative engagement with the revolving head which turns the tenon and bores out the socket.

Fig. 4 isa detail longitudinal section of the head. 7

The head 10, described in detail hereinafter, is rotatably mounted in a stock 11 fixed on the bed 12 and at its rear end it is fixed to the driving shaft 13, which is rotated in bearings 14, 15, by direct drive from a motor 16. The bearings 14, 15 are carried by standards 17, 18. a

A pile which is to be headed is shown at 19, firmly gripped by a clamp composed of opposed transversely movable jaws 20, Fig. 3. The latter are mounted on a carriage 21, and are shifted in and out equally thereon to grip and releasethe work by means of an axially stationary actuating shaft 22, rotated by a hand wheel 23 and provided with right and left hand threads engaging suitable nuts 24 on the jaws.

The carriage 21 is shiftable longitudinally of the machine on rails 25 by means of a longitudinal feed screw 26,Figs. 1, 2 andv 3, cooperating with a nut 27 on the carriage,Fig. 3. The feed screw is driven from the shaft 13 ineither direction at will, to advanceand retract the work carriage, by the following mechanism. 1

On the unthreaded portion of the feed screw, and freely rotatable but axially stationary thereon, are two clutch members 28, 29, and between them an axially shiftable clutch member 30 splined on the feed screw, to cooperate with either ofthe other members at will. The clutch parts named can be of any suitable type, but for the sake of simplicity I have shown them asof the conventional cup-and-cone class. The cones 30 are shifted by a shift lever31, Fig. 2, fulcrumed at 32 and actuated by a shifter rod 33, Fig. 1. The clutch members 28 and 29 are rotated in opposite directions, as indi cated by the arrows in Fig. 1, by gears 34, 35, which are rigidly connected to the members mentioned and which are themselves rotated by pinions 36, 37 (see also Fig. 2) on countershafts 38, 39. The latter shaft is driven by a gear 41 from a pinion 42 on shaft 38, which is itself driven by a gear 43 from a pinion 44 on shaft 13. From the foregoing it will be seen that with the driving shaft running in the direction of the arrow applied to it in Fig. 1, that is, clockwise as viewed from the left, the clutch member 28 will be rotated in the same direction and the member 29 in the opposite direction. The feed screw 26 having a right hand thread, the carriage 21 will be advanced, toward the head 10, when the clutch member 30 is engaged with member 28, and will be retracted, away from the head, when the member 29 is engaged, as will be readily understood.

extending axially stationary the main driving leftaround the tenon by pinned on the driving shaft 13, and inside of the cylinder, fastened by the samebolts, is a plurality of tool holdersfi'l, two: or more in,

number, carrying inclined facing knives, as 4 8, by which the gend .of the tenon, shown in Fig. 4c, is trued up and faced off at right an' 7 glesto the axis ofthe tenon. At the axis of the head is an auger bit. 4L9, ..removably mounted ina chucked) for boring out the socket-in theend ofthe tenon. At its forward-end ofthe head. 10 the cylinder is providedwwith a radial flange 50, to which is bolted a plurality of tool =holders, one or more of whichgas 51, carry inclined, gouges (one gouge being shownat 52).to form the tenon, while others, as 2, v carry inclined shoulderinglmives ,53'to cut back the wood the gouges and form the square, shoulder at the base, of, the tenon Openings .54 are provided in the head for the escape of chips and borings.

The operation ofthe machine will now be readilyunderstood. v I

The pile being'clampedon the carriage 21 in axial alignment with the headw (the other end of thepi le being. loosely supported in anyiconvenientl manner) the machine is started, rotatingthe headand the feed screw.

The .pile is advanced by the latter,sand first meets the igouge-or'gouges 5-1 and the shoulderingyknives 153, which,}as the advance con: tinue's, shape the tenon rapidly-and accurately- Next the end 'of the partially formed tenon-meets the bit ;49, by which the socket 55 is bored out at the-axis of the:.-ten0n. Finally the rough end .of the tenon meets the facing knives 48 and is faced off square to the axis. This operation finished, the "rotafar enough-the machine is stopped, the clamp opened, and the pile removed.

It is to be'understood that the invention is notlimited to the construction herein specifically illustrated and described but can be embodied in other forms without departure from its spirit as defined by the following claims I claim:

.1. In a pile=heading machine, a revoluble headippen forwardly ,to receive the end of the ,pile, tenoninggouges at the open end of the head to form a, tenon, shoulderingknives at the open end of the head to remove wood outside of the gouges and at thebase" of the tenon, and facing knives at the inner end of the .headtoface'the end of th t on, e

2. In a pile-heading machine, a tenoning and socketing headcomprising a hollow cyl form ashoulder inder having ,a closed end and a circumferentially .fiangedn open end, tenoning tools carried by the flangeon the ,open end, a boring bit inside; the cylinder at the axis thereof and extending end,..facing' knivesfaround the bit at the closed endflofthe cylindenholders for the facing. knives,-;a-driving- ,collarlin' rear ,of the closed, end ofvthe cylinder and having a cirm ereetia iflw az f.

through the facing-k; ife. holders, the .endllof the cylinder, and the flange onthe driving collar, to fasten; the .facingeknife holders in the cylinder a nd the cylinder .on the driving cel r- In testimony whereof I 'hereto aflix my s gna ure- MAXWELLMQUPSON.

-forwardly from the closed and bolts; extendmg 

